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  1. Qt
  2. QTBUG-55956

[Weston] QPainter with Qt::WA_TranslucentBackground enabled doesn't reset previous image

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    Details

    • Type: Bug
    • Status: Reported
    • Priority: P3: Somewhat important
    • Resolution: Unresolved
    • Affects Version/s: 5.7.0
    • Fix Version/s: None
    • Component/s: GUI: Painting, QPA: Wayland
    • Labels:
      None
    • Environment:
      Linux x68, Wayland/Weston 1.10

      Description

      drawing something with QPainter on a widget with Qt::WA_TranslucentBackground doesn't reset previous state.

      The minimal example attached works on Linux/XCB and Mac well, but it doesn't work on weston. See the image attached.

        Attachments

        1. drawRect.png
          drawRect.png
          76 kB
        2. translucent.tar.gz
          0.9 kB
        For Gerrit Dashboard: QTBUG-55956
        # Subject Branch Project Status CR V
        171316,1 erase WA_TranslucentBackground QWidget background before drawing 5.8 qt/qtbase Status: ABANDONED -1 0
        197758,2 Translucent background support 5.9 qt/qtwayland Status: MERGED +2 0

          Activity

            People

            Assignee:
            johanhelsing Johan Helsing
            Reporter:
            tasuku.suzuki Tasuku Suzuki
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            Watchers:
            2 Start watching this issue

              Dates

              Created:
              Updated:

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